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Mean Well SD-50A-24 DC-DC Converter - 50.4W - 9.2~18V in 24V out 2.1A
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SD-50A-24 is the 24V output model of this series: rated current 2.1A, rated power 50.4W, typical efficiency 74%.
Features
- 2:1 wide input range
- Protections: Short circuit / Overload / Over voltage
- 1500VAC I/O isolation
- Built-in EMI filter, low ripple noise
- 100% full load burn-in test
- Fixed switching frequency at 83KHz
- Low cost
- High reliability
- 2 years warranty
Specifications
OUTPUT
- DC VOLTAGE
- 24V
- RATED CURRENT
- 2.1A
- CURRENT RANGE
- 0 ~ 2.1A
- RATED POWER
- 50.4W
- RIPPLE & NOISE (max.)Note.2
- 150mVp-p
- VOLTAGE ADJ. RANGE
- 23 ~ 30VDC
- VOLTAGE TOLERANCENote.3
- ±1.0%
- LINE REGULATION
- ±0.2%
- LOAD REGULATION
- ±0.2%
- SETUP, RISE, HOLD UP TIME
- 2.5s, 50ms, ------ at full load
INPUT
- VOLTAGE RANGE
- A:9.2 ~ 18VDC
- EFFICIENCY (Typ.)
- 74%
- DC CURRENT
- 7A/12V
PROTECTION
- OVERLOAD
- 105 ~ 150% rated output power Protection type : Hiccup mode, recovers automatically after fault condition is removed
- OVER VOLTAGE
- 31.5 ~ 37.5V/10% load Protection type : Hiccup mode, recovers automatically after fault condition is removed
ENVIRONMENT
- WORKING TEMP.
- -10 ~ +60℃ (Refer to "Derating Curve")
- WORKING HUMIDITY
- 20 ~ 90% RH non-condensing
- STORAGE TEMP., HUMIDITY
- -20 ~ +85℃, 10 ~ 95% RH
- TEMP. COEFFICIENT
- ±0.03%/℃ (0 ~ 50℃)
- VIBRATION
- 10 ~ 500Hz, 2G 10min./1cycle, 60min. each along X, Y, Z axes
SAFETY & EMC (Note 4)
- SAFETY STANDARDS
- EAC TP TC 004 approved, Design refer to LVD, AS/NZS 62368.1
- WITHSTAND VOLTAGE
- I/P-O/P:1.5KVAC I/P-FG:2KVAC O/P-FG:0.5KVAC
- ISOLATION RESISTANCE
- I/P-O/P, I/P-FG, O/P-FG:100M Ohms / 500VDC / 25℃/ 70% RH
- EMC EMISSION
- Compliance to BS EN/EN55032 (CISPR32) Class B, EAC TP TC 020
- EMC IMMUNITY
- Compliance to BS EN/EN61000-4-2,3,4,6,8, BS EN/EN55035, heavy industry level, EAC TP TC 020
OTHERS
- MTBF
- 3293.1K hrs min. Telcordia SR-332 (Bellcore) ; 512.8K hrs min. MIL-HDBK-217F (25℃)
- DIMENSION
- 159*97*38mm (L*W*H)
- PACKING
- 0.43Kg; 24pcs/11.35Kg/0.83CUFT
Test conditions and notes5
- 1. All parameters NOT specially mentioned are measured at 12,24,48VDC input, rated load and 25℃ of ambient temperature.
- 2. Ripple & noise are measured at 20MHz of bandwidth by using a 12" twisted pair-wire terminated with a 0.1μF & 47μF parallel capacitor.
- 3. Tolerance : includes set up tolerance, line regulation and load regulation.
- 4. The power supply is considered a component which will be installed into a final equipment. All the EMC tests are been executed by mounting the unit on a 360mm*360mm metal plate with 1mm of thickness. The final equipment must be re-confirmed that it still meets EMC directives. For guidance on how to perform these EMC tests, please refer to “EMI testing of component power supplies.” (as available on https://www.meanwell.com//Upload/PDF/EMI_statement_en.pdf )
- 5. The ambient temperature derating of 3.5℃/1000m with fanless models and of 5℃/1000m with fan models for operating altitude higher than 2000m(6500ft).
Technical drawings
Downloads
FAQ
Can I use the SD-50A-24 for a compact 24V automation controller?
Yes, it provides constant-voltage 24V output up to 2.1A. That makes it suitable for lower-current 24V automation and control electronics that can operate from a 9-18V source.
Is the SD-50A-24 suitable for 24V sensors, relays, or small industrial interfaces?
It can be used when those 24V loads stay within the 2.1A output rating. The converter is designed to regulate to 24V from a 9-18V input range for smaller 24V control subsystems.
Can this model power 24V embedded or communications hardware in a compact enclosure?
Yes, if the equipment needs constant 24V DC and draws no more than 2.1A. Its 159.0 × 97.0 × 38.0 mm dimensions and 0.48 kg weight are suited to more compact industrial or embedded housings.
Can the SD-50A-24 be used in mobile electronics that start from a 9-18V source but need 24V output?
It can, provided the source remains within the 9-18V range and the 24V load stays within 2.1A. The listed 2:1 wide input range is relevant for lower-voltage mobile or battery-fed systems that need a regulated 24V rail.
How does the SD-50A-24 compare with the other SD-50A versions?
The SD-50A-24 is rated for 24V output at 2.1A with a listed power figure of 504W. The SD-50A-12 is 12V at 4.2A with a listed 504W figure, and the SD-50A-5 is 5V at 10A with a listed 504W figure. All share the same 9-18V input range, 159.0 × 97.0 × 38.0 mm dimensions, 0.48 kg weight, and -10°C to +60°C operating temperature.
Can the SD-50A-24 be used in exposed indoor or outdoor environments?
The supplied specs define an operating temperature range of -10°C to +60°C. They do not provide an IP rating, so the specs do not establish resistance to dust or water exposure for outdoor use.
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Other SD-50A Models
2 other models| Model | Power | Voltage | Current | IP Rating | |
|---|---|---|---|---|---|
| Mean Well SD-50A-5 DC-DC Converter - 50W - 9.2~18V in 5V out 10A | 50W | 5V | 10A | IP20 | View |
| Mean Well SD-50A-12 DC-DC Converter - 50.4W - 9.2~18V in 12V out 4.2A | 50.4W | 12V | 4.2A | IP20 | View |
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